245345242055542 has 4 divisors (see below), whose sum is σ = 368017863083316. Its totient is φ = 122672621027770.

The previous prime is 245345242055449. The next prime is 245345242055591. The reversal of 245345242055542 is 245550242543542.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 245345242055542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61336310513884 + ... + 61336310513887.

It is an arithmetic number, because the mean of its divisors is an integer number (92004465770829).

Almost surely, 2^{245345242055542} is an apocalyptic number.

245345242055542 is a deficient number, since it is larger than the sum of its proper divisors (122672621027774).

245345242055542 is a wasteful number, since it uses less digits than its factorization.

245345242055542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122672621027773.

The product of its (nonzero) digits is 38400000, while the sum is 52.

The spelling of 245345242055542 in words is "two hundred forty-five trillion, three hundred forty-five billion, two hundred forty-two million, fifty-five thousand, five hundred forty-two".